Influence of Vertical Irregularity on the Seismic Behavior of Base Isolated RC Structures with Lead Rubber Bearings under Pulse-Like Earthquakes

Q2 Engineering
Ali Mahamied, Amjad A. Yasin, Yazan Alzubi, Jamal Al Adwan, Issa Mahamied
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引用次数: 0

Abstract

Nowadays, an extensive number of studies related to the performance of base isolation systems implemented in regular reinforced concrete structures subjected to various types of earthquakes can be found in the literature. On the other hand, investigations regarding the irregular base-isolated reinforced concrete structures’ performance when subjected to pulse-like earthquakes are very scarce. The severity of pulse-like earthquakes emerges from their ability to destabilize the base-isolated structure by remarkably increasing the displacement demands. Thus, this study is intended to investigate the effects of pulse-like earthquake characteristics on the behavior of low-rise irregular base-isolated reinforced concrete structures. Within the study scope, investigations related to the impact of the pulse-like earthquake characteristics, irregularity type, and isolator properties will be conducted. To do so, different values of damping ratios of the base isolation system were selected to investigate the efficiency of the lead rubber-bearing isolator. In general, the outcomes of the study have shown the significance of vertical irregularity on the performance of base-isolated structures and the considerable effect of pulse-like ground motions on the buildings’ behavior.
脉动地震作用下竖向不规则性对铅橡胶支座基础隔震RC结构抗震性能的影响
目前,在文献中可以找到大量与常规钢筋混凝土结构中实施的基础隔震系统在各种类型地震下的性能有关的研究。另一方面,关于不规则基础隔震钢筋混凝土结构在脉动地震作用下的性能研究非常少。脉冲型地震的严重程度来自于它们通过显著增加位移需求来破坏基础隔离结构的能力。因此,本研究旨在探讨脉动地震特征对低层不规则基础隔震钢筋混凝土结构性能的影响。在研究范围内,将进行脉动地震特征、不规则性类型和隔震性能影响的相关研究。为此,选取不同阻尼比值的基础隔震系统来研究铅橡胶隔震器的效率。总的来说,研究结果表明了垂直不均匀性对基础隔震结构性能的重要性,以及脉冲式地震动对建筑物性能的相当大的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
SDHM Structural Durability and Health Monitoring
SDHM Structural Durability and Health Monitoring Engineering-Building and Construction
CiteScore
2.40
自引率
0.00%
发文量
29
期刊介绍: In order to maintain a reasonable cost for large scale structures such as airframes, offshore structures, nuclear plants etc., it is generally accepted that improved methods for structural integrity and durability assessment are required. Structural Health Monitoring (SHM) had emerged as an active area of research for fatigue life and damage accumulation prognostics. This is important for design and maintains of new and ageing structures.
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